Academic Journal
Chemical composition of Pluto aerosol analogues
| العنوان: | Chemical composition of Pluto aerosol analogues |
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| المؤلفون: | Jovanovic, Lora, Gautier, Thomas, Vuitton, Véronique, Wolters, Cédric, Bourgalais, Jérémy, Buch, Arnaud, Orthous-Daunay, François-Régis, Vettier, Ludovic, Flandinet, Laurène, Carrasco, Nathalie |
| المساهمون: | PLANETO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France-Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France, Laboratoire de Génie des Procédés et Matériaux (LGPM), CentraleSupélec-Université Paris-Saclay, European Project: 636829,H2020,ERC-2014-STG,PRIMCHEM(2015) |
| المصدر: | ISSN: 0019-1035. |
| بيانات النشر: | HAL CCSD Elsevier |
| سنة النشر: | 2020 |
| المجموعة: | Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
| مصطلحات موضوعية: | Organic chemistry, Chemistry, Pluto, Atmosphere, Atmospheres, [SDU]Sciences of the Universe [physics], [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
| الوصف: | International audience ; Photochemical aerosols were observed in Pluto atmosphere during the New Horizons flyby on July 14th, 2015, as several thin haze layers extending at >350 km of altitude. This flyby has raised numerous questions on the aerosol formation processes and their impact on Pluto climate and radiative transfer. In order to gain a better understanding, we synthesized Pluto aerosol analogues in a room-temperature dusty plasma experiment and inferred their chemical composition from infrared spectroscopy, elemental composition analysis and very high-resolution mass spectrometry (ESI+/Orbitrap device). Three types of samples were synthesized at 0.9 ± 0.1 mbar, called P400, P600 and PCO-free. The samples P400 and P600 were produced from gas mixtures mimicking Pluto atmosphere at around 400 and 600 km of altitude, respectively, in order to determine if CH4 mixing ratio has an influence on the chemical composition of the aerosols. The sample PCO-free was produced from a gas mixture similar to the one forming the sample P400, but without carbon monoxide, in order to identify the impact of CO.Our study shows that the molecules constituting samples P400 and P600 are very rich in nitrogen atoms (up to 45% in mass of N elements) and, compared to the molecules constituting the PCO-free sample, a significant incorporation of oxygen atoms was detected. Moreover, our results on the variation of CH4 mixing ratio demonstrate that different ratios lead to different reactivity between N2, CH4 and CO. More nitrogen and oxygen atoms are detected in the bulk composition of the analogues P400. Due to the presence of nitrogenated and oxygenated molecules in the analogues of Pluto aerosols, we suggest that these aerosols will have an impact on Pluto radiative transfer, and thus on climate, that will differ from predictions based on the optical constants of Titan aerosol analogues. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | info:eu-repo/grantAgreement//636829/EU/Primitive chemistry in planetary atmospheres: From the upper atmosphere down to the surface/PRIMCHEM; insu-02533967; https://insu.hal.science/insu-02533967; https://insu.hal.science/insu-02533967/document; https://insu.hal.science/insu-02533967/file/Chemical%20composition%20of%20Pluto%20aerosol%20analogues.pdf |
| DOI: | 10.1016/j.icarus.2020.113774 |
| الاتاحة: | https://insu.hal.science/insu-02533967 https://insu.hal.science/insu-02533967/document https://insu.hal.science/insu-02533967/file/Chemical%20composition%20of%20Pluto%20aerosol%20analogues.pdf https://doi.org/10.1016/j.icarus.2020.113774 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.467548F1 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.icarus.2020.113774 |
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